Valve and connection.



G. P. GARRGLL.

VALVE AND GONNBGTIONS.

'other result and automatically closed when y GEORGE P. CARROLL, OF BRIDGEPORT, CONNECTICUT.

VALVE AND CONNECTION.

Specification of Letters Patent.

Patented June 15, 1909.

Original application filed March 1, 1907, Serial No. `360,055. Divided and this application led June 6, 1907.

Serial No.

To all whom it may concern:

Beit known that I, GEORGE P. CARROLL, a citizen of thel United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented a new and useful Valve and Connection, of which the following is a specification.

This application is a division of my application Ser. No. 360,055, tiled March 1, 1907, entitled electric expansion valve, in which the claims were based on the construction and immediate ope/ration of the valve. In this application my invention relates to valves automatically o ened when power is simultaneously applic to produce some the application of power to such other purposes is terminated; and it especially relates to expansion valves and other valves in refrigerating systems which are made to open and close simultaneously with the starting and stopping of the system. The means ein ployed are automatic means whereby at the time the power is applied to produce some other result, such as the operation of a refrigerating system, Whether of the compression or absorption type, the valve, by the application of electric power, is opened; and whereby, at the time such application of power is terminated, the valve is similarly closed. The means also consist of automatic means whereby, while refrigerating system or other object to which thc` main power was applied is being operated, the valve is locked in an open position so that it will romain open without the further employment of 1ower until the main application of power as terminated.

In the drawings Figure 1 is a front elevation of the valve and connections, the latter being diagrammatic in part. Fig. 2 is a side elevation of a switch and connections. Fig. 3 is a vertical section of the valve.

Electric mains 1 lead to and return from a motor M operatively connected with a come presser K of a refrigerating system. Obviously such mains could be made to lead to and return from an electric heater used to heat the still of an absorption refrigerating system and the combination of elements would generically be the same.

A switch 2 is used to turn on the current to the motor, or other object to which the current is to be applied, by making contact at 3 5 diate between the inlet and outlet is a horizontal conical valve seat 12. A needle valve 13 is adapted to occupy and close the valve seat from above and when 4not otherwise raised is pressed down upon its seat by a coiled spring 14, abutting at one end against the inside ofthe top cap 15 ofthe casing and at its other end against the top of the needle valve. The needle valve is guided along its length by the guides .16 and 17, cast as parts of the casing, so that the valve readily finds its seat. The upper part of the valve is provided -With a projecting pin 18, adapted for engagement with the slotted end 19 of the inner lever 20, extending in a horizontal direction. The other end of this lever is secured to or made of one piece with a lever shaft 21, journaled at one end in the back wall of the casing and passing out through the front of the casing where it is provided with a suitable stuffing box 22. Instead of the pin 18 the topv of the valve might be provided with a stationary collar and instead of the slot 19 the inner lever might be provided with a fork to engage the collar on its under.

side. .An outer lever 23 is secured to the outer end of the lever shaft 21 and extends in a horizontal direction opposite to that of the inner lever.

Pivoted at 24 on the extended outside part of the casing 9 is a three-part lever 25 having its main arm 26 extending horizontally toward and terminating in a position just above the outer end of the outer lever 23. The extreme end of the main arm 26 is provided with an adjusting screw 27 so that the contact of the main arm 26 and the outer end of the outer lever may be suitably regulated. The length with which the screw projects below the main arm determines the depression of the outer lever 23 and the consequent elevation of the inner lever 20, the pin 18, and the needle valve 13 from off its seat. Substantially at right angles to the main arm an upper arm 281 extends upward and a lower 'arm 29 extends downward from the pivot 24. t g,

Intermediately placed in the branch hns 7 is an electro-magnet 30. This magnet 1s placed immediately under the main arm 26, which is there provided with an armature on its under side, and when energized by the passage of a current depresses the main arm downward so as to be in contact through the adjusting screw 27 with the outerend of the outer lever 23. The depression of the main arm 26 overcomes a spring 31 which keeps the main arm elevated when the magnet is not energized or when the main arm is not locked in a depressed position. The depression of the main arm 26 throws the upper arm 28 to the left and the lower arm 29 to the right.

A dog 32, provided with an armature on its up r side, ivoted at 33 on the extended outsl e part o vthe casing 9, has a tooth 34, which rests upon the inc 'ned outside of the extreme top of the upper arm 28 while the main arm 26 is elevated. But with the depression of the main arm by the energizing of the electro-magnet 30, the u per arm 28 slips inside of the tooth 34 and) there continues in a locked position after the electromagnet 30 is no longer'energized. If necessary a light spring may be provided topress the dog 32 downward so as to be constantly ready to permit of the upper arm being enaged; or, as shown, the force of gravity may be sufficient to depress the dog.-

A switch 35 is pivoted at 36 on the extended outside part of the casing 9 and connects the electro-magnet 30 back to the mains 1. This switch has two limit arms 37 and 38 and also a weight arm intermediate between them and endmg in a small globular weight 39. Both these limit arms are adapted in turn to be engaged by the lower end of the lower arm 29 as 1t is moved to the right by the depression of the main arm 26 and back again by its elevation. When the electro-magnet 30 is energized, the first effect of depressing the mam arm 26 is to lock the upper arm 28 into engagement with the tooth 34. Simultaneous] the lower arm 29 is thrown against the -mit arm 37 so as to thrust it to the right and to throw the center of gravity of the weight 39 to the right of the center of the pivot 36. This shifting of the weight 39 then opens the switch and breaks the flow of current throu h the branch line 7. The time require for this last action is sufficient to permit the upper arm 28 to become engaged with the tooth l34: before the current is broken.

A second electro-magnet 40 is secured to the upper part of the extended outside part of the casing 9 immediately above the dov 32 and intermediate in the branch line 5. Wlhen the electro-magnet 40 is thus energized it lifts the dog 32 and thereby releases the upper varm 28. This action permits the s ring 31 to raise the main arm 26, the e cetro-magnet 30 being, asvjust seen in a condition of non-ener zation. The lifting of the main arm 26 t rows the lower arm 29 against the limit arm 38 so'asto thrust it to the left' and to throw the center of gravitfy of the weight 39 to the left of the center o the ivot 36. This shifting of the wei ht then c oses the switch 35 and makes ossi le a flow ofcurrent to again energize the electro-magnet 30. y

The method Af operation is as follows: When the valve.is 'used,fas' especially intended, as the expansion valve-'ina refriger-` ating system, the turning on of the electric current to the system, by the switch 2 making contact at 3, also sup lies a current to the branch line 7. rThe e cetro-magnet 30 is therebyenergized'since the switch 35 has been closed by the prior shiftingof the weight 39 to the left. The ener 'zing' of the electro-magnet 30 depresses t e main arm 26 and the outer lever 23. This action l raises theinner lever 2O and the in 18 so as to .lift the needle valve 13 from o its seat 12. Simultaneously with the depression of the main arm 26 the up r arm 28 is locked in eng ement with the tooth 34 and the shift-4 mg o the -weight 39 to the ri ht next opens the switch 35 and breaks the ow of current throuh the branch line 7. When subseuenty the current is turned off so as to s ut down the system, for an instant, by the switch 2 making an .intermediate contact at 4, a current is sent over the branch line 5 to the electro-magnet 40. The energization of this electro-magnet lifts the dog 32, disengages thel upper arm 28, permits the main arm 26 to rise and againV closes the switch 35. As the main arm 26 rises, the spring 14 depresses the valve 13 in'to its seat and forces down the inner lever 20 so as to elevate the outer lever 23 into its ori 'nal position. It is to be observed that whithe turning on of the current also energizes the electro-magnet 40, this has no effect other than to raise the dog 32 f or an instant at a time when it is not in engagement.

The flow of fluid through the expansion valve is thus made automatically to begin with the starting of the system and to end with its shutting down.- The electric current opens the valve and is then shut off,

with the locking of the valve in an open osi.

tion, not to be turned on again unti the valve is to be closed. ,By thus loc-king the valve no current is wasted in maintaining the valve in an open position. Owing to greatrather than some form of gate valve or rotary valve exposing greater surface to the high pressure. And owing to the extreine tenuity of ammonia gas, the part of the mechanism, like the shaft 21 connecting the valve with moving parts outside of the casing, may have a rotary rather than a reciprocating motion;

When the valve is used as the expansion valve of a refrigerating system, it is to he understood that a ressure regulating valve maybe pla( ed in t e expansion coil (l. Such a valve is shown and described in my application Ser. No. 351,068,'iled Jan. 7, 1907, entitled automatic expansion valve. I/Vhile the valve shown and described is an eXpansion valve, the same principle of opening and closing in connection with the turning on and oii of power used for other purposes would apply to a single stage condenser valve, such as is described in the latter' part of the description in my application Ser. No. 364,418, iiled March 25, 1907, entitled electric water valve, and some of the following claims are generic to Cover such a valve as Well as other valves. So also the principle of closing in conne: tion with the turning off of power used for other purposes would apply to the Condenser valve shown and described in my application Ser. No. 371,822, filed May 4, 1907, entitled pressure and electric condenser valve; and some of the generic claims cover a combination with such a valve. It is also to be understood that in place of the motor M and the compressor K there could be substituted the heater of an absorption system; and also that the power to open and close the valve could be used simultaneously to turn on and ofi' any heating agent such as steam or gas as applied to heating the stillof such absorption system. Yet again the other results and the other mechanism in the claims would include the actuation of such condenser valves as are above referred to, both in a compression and in an absorption system automatically operated.

I claim:

1. In combination an apparatus for drawing in gas and making the same more dense, a valve, means for applying power simultaneously to operate said apparatus and to open said valve, automatic means operative to shut oli the power so applied to open said valve, and means for subseguently shutting off the power operating sai( apparatus and closing said valve.

2. In combination an apparatus for drawing in gas and making the same more dense, a valve, means for applying power simultaneously to o erate said apparatus and to o en said va ve, automatic means electrically actuated so as to shut 0H the power applied to open said valve, and means for su bsequently shutting off the power operating said a paratus and closing said valve. i

3. n combination an apparatus for. drawing in gas and making the saine more dense, a valve, means i'or applying power simultaneously to operate said apparatus and to open said valve, automatic means operative to shut oii` the power so applied to opensaid valve, and means for subsequently simultaneously shutting ofi the power operating said apparatus and closing said valve.

4. In combination an apparatus for drawing in gas and making the same more dense, a valve, means for applying power simultaneously to operate said apparatus and. to open said valve., automatic means electrically actuated so as to shut ofi' the power applied to open said Valve, and means for subsequently simultaneously shutting ofi the power operating said apparatus and closing said valve. 5. In combination an apparatus for drawing in gas and making the same more dense, a valve, means t'or applying power to operate said apparatus and to open said valve, and automatic means actuated by the power applied to open said valve to shut. ofi' the power so applied.

6. In combination an apparatus for drawing in gas and making the same more dense, a valve, means for applying power to operate said apparatus and to open said. valve, and automatic means actuated hy electric power to shut eti the power applied to opt-n said valve.

7. In combination an apparatus for drawing in gas and making the same more dense, a valve, meanstor applying power to operate said apparatus and to open said valve, automatic means actuated by the power applied to open said valve to shut oli' the power so applied, and means for subsequently shutting off the power operating said apparatus and closing said valve.

8. In combination an apparatus for drawing in and making the same more dense, a valve, means for applying power to operate said apparatus and to open said valve, automatic means actuated by electric power to shut off the power applied to open said valve A and means for subsequently shutting off the power operating said apparatus and closing said valve.

9. In combination an apparatus for drawing in gas and making the same more dense, a valve, means for applying power simultaneously to operate said apparatus and to open said valve, and automatic means actuated by the powerapplied to open said valve to shut off the power so applied.

10. In combination an apparatus for drawing in gas and making the same more dense, a valve, means for applying power simultaneously to operate said apparatus and to open said valve, and automatic means actuated by electric power to shut off the power applied to open said valve.

11. In combination an apparatus for drawing in gas and making the saine more dense, :l valve, inca-ns for applying power simultaneously to operate said apparatus and to open said valve, automatic means actuated b v the power applied to open said valve to shut oI'l` the power so applied, and means for subsequently shutting oil' the power operating said apparatus and closing said valve.

12. In Combination an apparatus for drawing in @as and making the same more dense, a va ve, means for applying power simultaneously to operate said apparatus and to open said valve, automatic means actuated by electric power to shutl oil the power applied to o en said val ve, and means for subsequently s utting ofi the power o erating "said apparatus and closing said valve.,l

13. ,In combination an apparatus for drawing in gas and making the same more dense, a valve, means for opening said valve by mechanical action or for closing it, a device for mechanically acting upon said means so as to open said valve, means for applying power to operate said apparatus and to act on said device with such effect, and means actuated by the power so acting on said device to shut off the power applied to said device.

14. In combination an apparatus for drawing in gas and making the same more dense, a valve, means for openin said valve by mechanical action or for cosing it, a device for mechanically acting upon said means so as to open said valve, means for applying power to operate said apparatus and to act on said device with such effect, and means actuated by electric power to shut off the power applied to said. device.

Y 15. In combination an apparatus for drawing in gas and making the same more dense, a valve, a magnetizable device operative when magnetized to open said valve, an electric device operative when energized to so magnetize said former device, electric connections to and from said electric device, va switch in said connections, means whereby when said device is so magnetized it also opens said switch, and means for applying power to operate said ap aratus and to send a current through said e ectric connections.

16. In combination an apparatus for drawing in gas and makin(r the same more dense, a valve, a magnetizable device operative when magnetized to open said valve, an electric device o erative when energized to so magnetize saidP former device, electric connections to and from said electric device, a switch in said connections, means whereby said device is so magnetized it also opens said switch, means for applying power to operate said apparatus and to send a current throu h said electric connections, and means for su se uently shutting oil the power operating sai apparatus and closing said valve and said switch.

17. In combination an apparatus for drawing in gas and making the same 'more dense, a valve, a magnetizable device operatively connected to said valve, an electric device operative when ener `zed to act on said device so as to open sai valve, electric connections to and from said device, a switch in said connections, means whereby when said device is so acted upon it also opens said switch, and means for applyin power to o erate said ap aratus and to sen a current t rough said e ectric connections.

l8f In combination an apparatus for drawing in gas and making the same more dense, a valve, a magnetizable device operatively connected to said valve, an electric device operative when energized to act on said device so as to open said valve, electric connections to and from said device, a switch in said connections, means whereby when said. device is so acted u on it also opens said switch, means for appllying power to operate said apparatus and to send a current through said electricconnections, and means for subsequently shutting off the power operating said apparatus and closing said valve and said switch.

GEORGE P. CARROLL.

Witnesses:

A. MAUDE KIMBER, EDWARD F. HALLEN. 

